■Moving in water

Everyone gather on the sea floor and check the residual pressure and safety before startting the move.
When moving, don't swim past the person in front or leave the course rope by yourself.
Also, the course rope is equipped with chemical lights. Do not remove these lights.
Be careful not to touch the chemical lights when moving.

Let's move along the rope

During poor visibility diving, underwater floats such as plankton block the light from underwater lights.
This is called halation.
If halation occurs, you can eliminate it by illuminating the underwater light from above or from the side.

Halation looks like this